I was around stray cats & immediately started to get itchy under my shorts on my thighs. I seen a black bug on my leg that jumped. I took a shower & charged clothes. The next day the bites developed into red looking blisters. There were slightly hard, did not hurt and were very itchy. It's been roughly 4 days since and the blisters are just now starting to flatten. I didn't expect them to last so long. I don't have health insurance. Is this worth seeing a doctor for or will they heal?